Nearly 400 homes in Dublin will be without power overnight because of a fire at an ESB Network sub station in Ballyfermot.

The Dublin Fire Brigade attended to the fire on the Blackditch road and it has since been extinguished.

It's not known what caused the fire but vandalism has been ruled out.

A spokesperson from ESB Networks says it will be tomorrow morning before specialised contractors will get to work as the area has to be sealed off and generators sourced overnight.